i dunno...some people just get way too into the whole racing thing. i go as many times as possible....the car has a cooling system on it for a reason, IMO.
now if i was running a carb'd drag car....then that is a different story. hot fuel is not a good thing to have in a carb bowl......
but on a street car, i run it as it is. you would gain what, possibly a tenth? if that? now icing the IC is another story....